In 2021, you were given a 100. g wine sample to verify its age. Using tritium dating you observe that the sample has 0.688 decay events per minute. Tritium has a half life of 12.3 and fresh water exhibits 5.5 decay events per minute per 100. g. What year was the wine produced

Respuesta :

Answer:

1984

Explanation:

Given the formula;

0.693/t1/2 = 2.303/t log (Ao/A)

Where;

t1/2 = half life of the radioactive isotope

t= age of the wine

Ao= initial activity of the wine

A= activity of the at time = t

0.693/12.3 = 2.303/t log (5.5/0.688)

0.693/12.3 = 2.079/t

0.056 = 2.079/t

t= 2.079/0.056

t= 37 years

The wine was produced 37 years ago which means that it was produced in the year 1984

The wine has been produced in the year 1984.

Half-life can be defined as the time required by the substance to reduce to half of its initial concentration.

The decay of wine per minute has been = 0.688/minute

The half-life of the sample has been = 12.3

The decay of freshwater has been= 5.5 decay/minute

k can be given as:

k = [tex]\rm \dfrac{0.693}{Half-life}[/tex]

k = [tex]\rm \dfrac{0.693}{12.3}[/tex]

k = 0.056 years

The time for the decay can be calculated as:

t = [tex]\rm \dfrac{2.303}{k}\;log\; \dfrac{a}{a\;-\;x}[/tex]

t = [tex]\rm \dfrac{2.303}{0.056}\;\times\;log\;\dfrac{5.5}{0.688}[/tex]

t = 37 years

The wine has been produced 37 years ago. The present year has been 2021. The year of wine production has been:

Year of wine production = 2021 - 37

Year of wine production = 1984.

The wine has been produced in the year 1984.

For more information about tritium dating, refer to the link:

https://brainly.com/question/2990708